JPH05124698A - Display changing-over device for fixed fuel feeder - Google Patents

Abstract

PURPOSE:To decrease part-replacing frequency and to prevent occurrence of accidents due to sparks or the like by a method wherein an area in which fuel is being fed is correctly detected and the amount of fuel fed is displayed toward the area, so that generation of troubles due to shocks to a fuel feeding nozzle is prevented. CONSTITUTION:Detectors 29a and 29b are provided in a fuel feeding device body 22 which is sandwiched by a first lane A and a second lane B, and so located that they can face the lanes A and B. Sound wave generating means 28a and 28b are provided respectively in fuel feeding nozzles 24a and 24b which are provided to face remaining areas S1 and S2, so that sound wave can be produced by effect of air. This sound wave is detected by one of the detectors 29a and 29b, and in response to the output from this detector 29a or 29b, the amount of fuel fed is displayed by a display 30a or a display 30b that faces the lane through which the fuel is being fed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display switching device for the amount of refueling, which can be suitably implemented in a stationary refueling device provided in a service station or the like.

[0002]

2. Description of the Related Art A typical prior art is, for example, Shokai Sho 5
3-165314. In this prior art,
As shown in FIG. 6, a pair of switches 5 and 6 are provided on the side wall 2 of the refueling device main body 1 in proximity to the base end 4 of the flexible refueling hose 3. These switches 5 and 6 are arranged on both sides with respect to the base end portion 4 of the refueling hose 3 which hangs vertically downward, and either one of the switches 5 or 6 is moved depending on the inclination of the refueling hose 3 near the base end portion 4. The switching mode is changed by being pressed, and the refueling amount is displayed by the display on the side where the switching mode is changed among the indicators 7 and 8 facing both sides of the main body 1.

In such a prior art, for example, when the vehicle C arrives at the second lane B for refueling, the refueling operator removes the refueling nozzle 9 and moves it to the refueling port of the vehicle C. At this time, when the vehicle C is stopped in the vicinity of the refueling device main body 1, the distance L between the refueling port of the vehicle C and the base end portion 4 of the refueling hose 3 is excessively short compared to the length of the refueling hose 3. As indicated by the phantom line 10, the refueling hose 3 swells toward the first lane A side due to its elastic recovery force, and therefore the switch 5 on the first lane A side is pressed to change the switching mode. The refueling amount of the vehicle C stopped in the second lane B is displayed on the display 7 facing A. Therefore, in order to display the amount of refueling by the display 8 on the side where the vehicle C has stopped, as indicated by the phantom line 11, at least the vicinity of the base end 4 of the refueling hose 3 does not press the switch 5. The vehicle C must be stopped at a sufficient distance L. Therefore, there is a problem that an undesired space must be secured around the main body of the fueling device in order to display the fueling amount toward the lane where fueling is being performed.

Another prior art is, for example, Jpn.
7519. In this prior art, as shown in FIG. 7, a transmitter 15 for transmitting an electromagnetic wave at a constant frequency is provided near the tip of a discharge pipe 14 extending from the main body 13 of the fuel nozzle 12, and the discharge pipe 14 is provided. A configuration is disclosed in which the electromagnetic wave emitted from the transmitter 15 is blocked when it is inserted into the fuel filler port of the vehicle and the fuel can be replenished when the receiver cannot receive the electromagnetic wave.

In such other prior art, when refueling, the vicinity of the tip of the discharge pipe 15 is often brought into contact with the vicinity of the fuel filler port of the vehicle or the nozzle case, and the discharge pipe 15 is used for a long period of time. Many have a deformed tip. If a transmitter is provided in such a part where shocks are frequently applied, the transmitter is easily damaged by even a slight shock and must be replaced frequently. In addition to the high cost, electric measures are used, so it is necessary to take measures to prevent sparks in the event of a breakdown or accident. Further, the tip of the discharge pipe 14 is a portion that is buried in a fuel oil such as gasoline or light oil during refueling, and an electronic device such as a transmitter is not provided at a portion where the fuel oil adheres. Not preferable.

[0006]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to display the amount of refueling toward the side where refueling is performed, so that the occurrence of damage due to impact or the like can be reduced as much as possible. It is an object of the present invention to provide a display switching device for a stationary refueling device capable of preventing the occurrence of sparks at the time of failure or accident without using electrical means.

[0007]

DISCLOSURE OF THE INVENTION The present invention is directed to a main body of a fueling device provided between first and second lanes where a vehicle coming to receive fuel stops, and a first lane and a second lane with respect to the main body.
A stationary refueling device including a flexible refueling hose provided in the main body facing at least one of two regions including a boundary with a lane, and a refueling nozzle connected to a tip end of the refueling hose. In the display switching device described above, a sound wave generating unit that is provided in the refueling nozzle or in the vicinity thereof and that generates a sound wave by the action of an air flow when refueling is started is provided in the main body so as to face the first lane. A first display means for displaying the amount of oil refueled by the refueling nozzle, and a second display means provided on the main body facing the second lane, for displaying the amount of refueling refueled by the fuel nozzle in the second lane. A display means, a first detection means provided on the main body, having directivity toward the first lane, and detecting a sound wave generated from the sound wave generation means; Any one of second detection means provided on the main body, having directivity toward the second lane, and detecting the sound wave generated from the sound wave generation means, and outputs from the first and second detection means In response to one, if the output is the output from the first detection means, the first display means is selected, and if the output is the output from the second detection means, the second display means is selected, A display switching device for a stationary refueling device, comprising: switching means for displaying the amount of refueling by the refueling nozzle.

[0008]

According to the present invention, the refueling nozzle is provided by the flexible refueling hose so that refueling can be performed in both the first and second lanes. When the refueling nozzle is detached from the main body to start refueling, Sound waves such as ultrasonic waves are generated from the sound wave generating means. The main body is provided with first detecting means having directivity toward the first lane and second detecting means having directivity toward the second lane. The sound wave generator generates a sound wave in one of the first lane and the second lane together with the refueling nozzle by refueling with the refueling nozzle, and the sound wave is the first detection means or the second detection. It is detected by either one of the means. The switching means to which either one of the detection outputs of the first and second detection means is input selects the display means corresponding to the detection means on the input side and faces the lane for refueling. Display the refueling amount with.

[0009]

1 is a horizontal sectional view of an embodiment of the present invention, and FIG. 2 is a vertical sectional view of the embodiment. In the fueling station, a refueling device 21 is provided between the first lane A and the second lane B where the vehicles C1 and C2 that have come to receive refueling stop. The oil supply device 21 includes an oil supply device main body 22.
And with respect to the main body 22, the first lane A and the second lane B
It is provided with flexible oil supply hoses 23a and 23b which are provided so as to face two regions S1 and S2 including the boundary with and oil supply nozzles 24a and 24b which are connected to the tip ends of the oil supply hoses 23a and 23b.

The refueling nozzles 24a, 24b are provided with side walls 26a, which respectively face the areas S1, S2 of the housing 25.
It is hooked by the nozzle cases 27a and 27b provided in 26b. These oil supply nozzles 24a and 24b have ultrasonic wave generating means 28a and 28b, respectively, having different frequencies from each other. The ultrasonic wave generating means 28a, 28b
Can be appropriately selected and used, for example, a Galton whistle or a Hartmann whistle that generates ultrasonic waves by supplying pressurized air.

The side walls 26c and 26d facing the first lane A and the second lane B of the housing 25 have directivity for detecting the ultrasonic waves generated by the ultrasonic wave generating means 28a and 28b. First and second detector 29
a and 29b are provided respectively. As the first and second detectors 29a and 29b, for example, a commercially available ultrasonic sensor configured to amplify a weak current generated by a piezoelectric element made of a material such as ceramic and derive it as a detection output is used. You may do it. In this case, a waterproof ultrasonic sensor is preferable.

Such ultrasonic wave generating means 28a, 28b
Is provided near the center position of each of the side walls 26c and 26d in FIG. As a result, the refueling nozzles 24a, 24
When any of b is used, each ultrasonic wave generation means 28
The detection sensitivity of the ultrasonic waves generated from a and 28b can be made substantially uniform.

The side wall 26c is provided with a first indicator 30a which is a first display means facing the first lane A, and the side wall 26d is a second display means facing the second lane B. Two indicators 30b are provided. The first and second indicators 30a and 30b are selectively switched by the switching means 31. That is, when refueling the vehicle C1 stopped in the first lane A by the refueling nozzle 24a, the first indicator 30a is selected, and when refueling the vehicle C stopped in the second lane B, the second indicator 30a is selected. Display 30b
Is selected. Similarly, regarding the other refueling nozzle 24b, when refueling C1 stopped in the first lane A, the first indicator 30a is selected, and when refueling vehicle C2 stopped in the second lane B. The second display 30b is selected.

The ground surface 32 on which the refueling device 21 is installed
Two storage tanks, which respectively store fuel oils of different oil types, are buried under. The one fuel oil is, for example, gasoline, and the other fuel oil is, for example, light oil. Each fuel oil in these storage tanks is supplied to the conduit 33.
a, 33b is individually pumped by pumps 34a, 34b, and further flows through pipes 35a, 35b.
The flow rate is measured by 6a and 36b, and the pipe line 37
It is guided to the refueling hoses 23a and 23b via a and 37b, and is fed under pressure to the refueling nozzles 24a and 24b. The pumps 34a and 34b are driven by pump motors 38a and 38b, respectively. Also, the flow meters 36a and 36b
Is a flow rate pulse transmitter 39a, 39 which outputs a flow rate pulse signal s1 of one pulse for each unit flow rate 1/100 liter.
b. Further, nozzle detection switches 40a and 40b are provided on the nozzle cases 27a and 27b, respectively. These nozzle detection switches 40a and 40b are
Nozzle cases 27a, 27b are provided with oil supply nozzles 24a, 24
A low-level nozzle detection signal s2 is output when b is locked, and a high-level nozzle detection signal s2 is output when the nozzles 24a and 24b are removed.

FIG. 3 is a block diagram showing an electrical configuration of the oil supply device 21. The switching means 31 amplifies the detection signal s3 from the first and second detectors 29a and 29b to discriminate the level at a predetermined discrimination level, and the detection signal s.
If 3 is above the discrimination level, the display switching signal s4 is output and the display switching signal s4 from each of the detection circuits 44a and 44b and the detection circuits 44a and 44b capable of determining the difference in frequency between the ultrasonic wave generating means 28a and 28b. In response, the flow rate pulse signals s1 from the flow rate pulse transmitters 39a and 39b
To the indicator 30a, 30
and a switching circuit 45 for outputting to b. Such switching means 31 is incorporated in the control means 46 realized by a microcomputer or the like to form a circuit.

The control circuit 46 controls the nozzle detection signal s2.
By switching the low level to the high level, the drive circuits 47a and 47b that output the motor drive signal s6 to drive the pump motors 38a and 38b when the low level is switched to the high level, and the nozzle detection signal s2 is switched from the low level to the high level. A counter circuit 48a that resets and counts the flow rate pulse signal s1 and outputs a count value signal s7 to the switching circuit 45,
48b and.

The ultrasonic wave generating means 28a and 28b include:
Compressed air from the compressed air pressure source 49 is supplied to the pipelines 50a and 50b.
Are respectively supplied through. Solenoid valves 51a and 51b are interposed in the respective pipelines 50a and 50b, and the nozzle detection signal s
The valve is opened when the low level changes from 2 to the high level, and is closed by the first pulse of the flow rate pulse signal s1. The compressed air pressure source 49 may be a compressor for a lift or an air tool, or a small compressor such as a diaphragm type may be built in the main body 22.

Although the ultrasonic wave generating means 28a, 28b are provided in the main body of the oil supply nozzles 24a, 24b in the present embodiment, it is preferable to avoid a relatively impacted portion such as a discharge pipe. For example, virtual line 52
As indicated by a and 52b, it may be provided in the vicinity of the connecting portion between the fueling nozzle main body and the fueling hose.

FIG. 4 is a flow chart for explaining the refueling operation by the refueling device 21. Referring also to FIGS. 1 to 3, vehicles C1 and C are provided in the first and second lanes A and B.
Neither of the two stops, so that the fuel supply nozzles 24a and 24b are hooked on the nozzle cases 27a and 27b, respectively, and the nozzle detection signal s2 remains at the low level. It is assumed that the vehicle C1 arrives in the first lane A to refuel in such a situation.

First, at step n1, the refueling operation is started,
In step n2, the refueling nozzle 24a becomes the nozzle case 27a.
Then, the nozzle detection signal s2 of the nozzle detection switch 40a is switched from the low level to the high level, and the drive circuit 47a outputs the motor drive signal s6 to drive the pump motor 38a in step n3. When the nozzle detection signal s2 is switched from low level to high level, the counting circuit 48a is reset and the count value signal s7 is reset.
However, since the flow rate pulse signal s1 is not input, the count value is zero. Furthermore, the nozzle detection signal s
By switching 2 from the low level to the high level, the solenoid valve 51a is opened, and the ultrasonic wave generating means 28a therefore generates ultrasonic waves.

When the refueling operator grips the refueling nozzle 24a and moves it to the side of the vehicle C1 parked in the first lane A, and the detector 29a detects it for a certain period of time in step n4, the detection circuit 44a is detected. Outputs the display switching signal s4, the switching circuit 45 selects the display 30a and connects the counting circuit 48a and the display 30a in step n5.
Then, when the discharge pipe 53a of the fuel filler nozzle 24a is inserted into the fuel filler port and the operation lever 54a is pulled, an on-off valve (not shown) built in the main body of the fuel filler nozzle 24a is opened to discharge the fuel oil from the discharge pipe 53a. .. Therefore, the flow rate pulse transmitter 39a outputs the flow rate pulse signal s1 in step n6, the electromagnetic valve 51 is shut off in step n7, and the generation of ultrasonic waves by the ultrasonic wave generation means 28a is stopped.

The solenoid valve 51a may be configured to open for a predetermined time after the nozzle detection signal changes from the low level to the high level to generate ultrasonic waves. Further, in the oil supply device having the oil type discrimination function, a pipe line for guiding the vaporized gas of the fuel oil from the vicinity of the tip of the discharge pipe 53a to the oil supply device main body is supplied with air every time the oil supply is performed for cleaning. Since an air supply pump is provided, such a pump can be used as the compressed air pressure source 4
It may be used as 9.

When the predetermined amount of oil has been supplied in this manner, the process proceeds to step n8, in which the worker refuels the nozzle 24a.
Is returned to the nozzle case 27a, the nozzle detection signal s2 is switched from the high level to the low level, and the pump motor 3 is displayed while the final value of the oil supply amount is displayed on the display 30a.
8 is stopped, the compressed air pressure source 49 is also stopped, and the refueling operation is completed in step n9.

The above-described refueling operation of steps n1 to n9 is performed when the vehicle C1 receives refueling in the first lane A and the refueling amount that is refueled using the refueling nozzle 24a is displayed by the first indicator 30a. However, the vehicle C2 came to the second lane B to receive refueling, and the refueling nozzle 24a
Alternatively, when refueling is performed using the refueling nozzle 24b, the refueling amount is displayed by the second indicator 30b. Therefore, using either of the fueling nozzles 24a and 24b,
Whichever lane A or B is refueled, the amount of refueling is displayed by the display 30a or 30b on the side receiving the ultrasonic wave.

FIG. 5 shows an oil supply device 2 according to another embodiment of the present invention.
It is a horizontal sectional view showing 1a. Refueling device 21 of the present embodiment
In a, an oil supply nozzle 2 provided so as to face the area S2.
Instead of 4b, the refueling nozzle 61a facing the first lane A
And a refueling nozzle 61b facing the second lane B are provided. Each of the fueling nozzles 61a, 61b has a fueling hose 62a,
The fuel oil connected to the pump 62b and pumped by the pumps 64a and 64b is supplied via the flowmeters 65a and 65b. Since the refueling nozzle 61a is not guided to the second lane B side and used, the refueling amount by the refueling nozzle 61a is displayed only by the first indicator 30a. Further, since the refueling nozzle 61b is not guided to the first lane A side and used, the refueling amount by the refueling nozzle 61b is displayed only by the second display 30b. Therefore, since it is only necessary to perform the switching operation of each of the indicators 30a and 30b with respect to the refueling nozzle 24a provided so as to face the area S1, the configuration related to the refueling nozzle 24a is shown in FIGS.
This is similar to the embodiment shown in FIG. In the embodiment of FIG. 1 or FIG. 5, if one of the display units is in use and the remaining nozzle is removed, the counting circuit of the nozzle is automatically connected to the other display unit. It is easy to use.

[0026]

As described above, according to the present invention, a directional detector is provided in the refueling device main body, and the sonic wave from the sonic wave generating means provided in the refueling nozzle is detected and displayed by this detector. Since the indicator provided facing the area to be lubricated is selected to display the amount of fuel supplied by the refueling nozzle, the indicator provided facing the refueling side is selected to display the amount of lubrication. Therefore, it is possible to prevent the selection mistake of the display device. Further, since the sound wave generating means utilizing the action of the air flow is provided in the oil supply nozzle and in the vicinity thereof, it is possible to generate a sound wave without using an electric configuration unlike the above-mentioned prior art, and it is possible to generate a shock or the like. It is possible to reduce the number of replacements by reducing as much as possible to reduce or eliminate the number of replacements, thereby improving the economical efficiency and preventing accidents due to electric sparks.

[Brief description of drawings]

FIG. 1 is a horizontal sectional view showing an oil supply device 21 according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of the oil supply device 21.

FIG. 3 is a block diagram showing an electrical configuration of the oil supply device 21.

FIG. 4 is a flowchart for explaining a refueling operation of the refueling device 21.

FIG. 5 is a horizontal sectional view showing an oil supply device 21a according to another embodiment of the present invention.

FIG. 6 is a diagram for explaining a typical prior art.

FIG. 7 is a refueling nozzle 12 for explaining another prior art.
FIG.

[Explanation of symbols]

 21, 21a Refueling device 22 Refueling device main body 23a, 23b Refueling hose 24a, 24b Refueling nozzle 28a, 28b Ultrasonic wave generation means 29a, 29b Detector 30a, 30b Indicator 31 Switching means 36a, 36b Flowmeter 38a, 38b Pump motor 39a , 39b Flow rate pulse transmitter 40a, 40b Nozzle detection switch 46 Control means 49 Compressed air pressure source s1 Flow rate pulse signal s2 Nozzle detection signal s3 Detection signal s4 Display switching signal s5 Refueling amount display signal s6 Motor drive signal s7 Count value signal

Claims (1)

[Claims] 1. A refueling device main body provided between first and second lanes in which a vehicle that receives refueling stops, and two regions including a boundary between the first lane and the second lane with respect to the main body. In a display switching device of a stationary refueling device comprising a flexible refueling hose provided in the main body facing at least one of the main body and a refueling nozzle connected to a tip end of the refueling hose, the refueling nozzle or the refueling nozzle A sound wave generating unit that is provided in the vicinity and that generates a sound wave by the action of an air flow when the refueling is started, and a main body is provided so as to face the first lane, and the refueling amount refueled by the refueling nozzle in the first lane is A first display means for displaying, and a second display provided on the main body so as to face the second lane, and for displaying the amount of fuel supplied by the fuel nozzle in the second lane. Display means, first detection means provided in the main body, having directivity toward the first lane, and detecting sound waves generated from the sound wave generation means, and provided in the main body, in the second lane The output is responsive to one of the second detection means for detecting the sound wave generated from the sound wave generation means and the output from each of the first and second detection means, If the output is from the first detection means, the first display means is selected, and if the output is from the second detection means, the second display means is selected to display the amount of fuel supplied by the fueling nozzle. A display switching device for a stationary refueling device, comprising: switching means.